Abstract: Replacement of software in an operating computer system, and in particular, synchronization of state transfer between processes within the old software to processes within the new software. The synchronization of state transfer between processes executing in the old and the new software includes the following steps: preparing the old static process within the old software for a forthcoming shutdown, activating it for the state transfer, preparing the new static process within the new software to take over, transferring all resource objects in the old static process to the new static process; ordering the old static process to remove all services, terminating the old static process; and committing the new static process to take over, indicating that the new static process is the sole owner of all the resource objects previously claimed from the old static process.